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Band training is a form of Strength Training.
The difference is that instead of weights you use a piece of elastic band.
As seen in the video.
http://www.youtube.com/watch?v=hyWlp0tO8CI

what this allows you to do is move as fast as you can without risk of injury.
You can also get creative, you can position the band in a number of ways to work every muscle you have. You can also increase or decrease the resistance that it provides.

When I was in basic I didn't sweat much during PT sessions.
With just an over sized rubber band I was dripping sweat.

Here is the one that I have if you want to try it out.
http://www.amazon.com/SPRI-ES501R-Resistance-Attachment-Exercise/dp/B0000AJ050/ref=pd_sim_hpc_7

Well worth the price.
I will post some pictures of my progress after a week or so.

I would try the rubber band thing, but I'm going to try pilates as physical therapy since my ribs are messed up.